What are the reasons for an increase in the inlet pressure of the synthesis tower?
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What are the reasons for an increase in the inlet pressure of the synthesis tower?
(1) As the reaction temperature drops, the synthesis reaction deteriorates, or even worsens. (2) An increase in the methane content in the recycled gas affects the methanol synthesis reaction. (3) The cooling effect is poor when the syngas passes through the recirculating water cooler, preventing the generated methanol from being separated. (4) Increasing the fresh gas flow rate without notifying the synthesis unit in a timely manner. (5) Catalyst activity declines, and the conversion rate is not high. (6) The vent volume is too low ； It will also lead to an increase in pressure
The amount of fresh gas increased, as did the inert components in the fresh gas; the amount of vent gas also increased. Alcohols accumulated significantly in the synthesis zone, resulting in a severe decline in the catalyst’s activity over time.